|In Brief:||The RGO Spectrograph is a general purpose optical spectrograph, covering 3100-11000Å. The 25cm camera can be used for long-slit spectroscopy, time series observations and spectropolarimetry. The 82cm camera has been superseded by UCLES for most applications, but is useful when small spatial pixels are needed (e.g. spectroastrometry).|
|Instrument Scientist:||No Instrument Scientist at present. Contact Head of Astronomy for information.|
|Manual:||AAO UM-2.4 "The RGO
Spectrograph Manual" by R. A. Stathakis and H. M. Johnston, 2002.
"The Medium Dispersion Cu Ar Arc Atlas" by C. G. Tinney, 1995, available online as a gzip'd Postscript file. Other (hardcopy only) related manuals are; AAO UM-24.2 "Spectropolarimetry at the AAT" by J. Hough & J. Bailey, 1994; and AAO UM 4 and 4a, Arc Atlases for CuAr and FeAr.
|Other Info:|| Information on the
Wavelength centres and coverage for grating settings can be calculated using the RGOANG spectrograph facility.
There is an entry in the Observer's Guide
|Detector:||Portable CCD, usually the 2k x 4k EEV or MITLL CCDs.|
|Focal Station:||Mounted at the Cassegrain focus with f/8 top end.|
|Image Scale:||0.43 arcsec per pixel with 25cm + EEV (unbinned)|
|Spectral Resolution*:||A range of gratings offer R=850 (250B) to R=12 000 (1200l, 2nd order) at 6000Å with 1.7 arcsec slit.|
|Filters:||A range of neutral density and order sorting filters are available.|
|*Spectral Resolution R measured as lambda/delta_lambda, delta_lambda = FWHM unresolved line, usually 2 pixels.|